package com.hdl.sdk.common.event;

import androidx.annotation.NonNull;
import androidx.collection.ArrayMap;


import com.hdl.sdk.common.utils.LogUtils;
import com.hdl.sdk.common.utils.ThreadToolUtils;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.ExecutorService;


/**
 * Created by Tong on 2021/9/22.
 * 事件分发
 */
public class EventDispatcher {

    private static final List<EventListener> ALL_TOPICS_EVENT = new ArrayList<>();//所有主题消息

    private static final ArrayMap<Object, List<EventListener>> EVENT = new ArrayMap<>();

    private static final ArrayMap<EventListener, Integer> TYPE = new ArrayMap<>();

    private static final int MAIN_TYPE = 0;
    private static final int IO_TYPE = 1;

    private static final ExecutorService ioThread = ThreadToolUtils.getInstance().newFixedThreadPool(3);

    private EventDispatcher() {
    }

//    private static class SingletonInstance {
        private static final EventDispatcher instance = new EventDispatcher();
//    }

    public static EventDispatcher getInstance() {
        return instance;
    }

    public synchronized void register(Object tag, EventListener listener) {
        if (!EVENT.containsKey(tag)) {
            EVENT.put(tag, new ArrayList<>());
        }
        List<EventListener> events = EVENT.get(tag);
        if (events != null && !events.contains(listener)) {
            events.add(listener);
        }
        TYPE.put(listener, MAIN_TYPE);
    }

    public synchronized void registerIo(Object tag, EventListener listener) {
        if (!EVENT.containsKey(tag)) {
            EVENT.put(tag, new ArrayList<>());
        }
        List<EventListener> events = EVENT.get(tag);
        if (events != null && !events.contains(listener)) {
            events.add(listener);
        }
        TYPE.put(listener, IO_TYPE);
    }

    public synchronized void remove(Object tag) {
        try {

            ioThread.execute(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (EVENT.containsKey(tag)) {
                            List<EventListener> list = EVENT.get(tag);
                            for (EventListener eventListener : list) {
                                TYPE.remove(eventListener);
                            }
                            EVENT.remove(tag);
                        }
                    } catch (Exception ignored) {
                        LogUtils.e("移除event异常1："+ignored.getMessage());
                    }
                }
            });
        }catch (Exception e){
            LogUtils.e("移除event异常2："+e.getMessage());
        }
    }

    public synchronized void remove(Object tag, EventListener listener) {
        try {
            ioThread.execute(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (EVENT.containsKey(tag)) {
                            List<EventListener> ev = EVENT.get(tag);
                            if (ev != null && !ev.isEmpty()) {
                                TYPE.remove(listener);
                                ev.remove(listener);
                            }
                        }
                    } catch (Exception ignored) {
                        LogUtils.e("移除event异常1："+ignored.getMessage());
                    }

                }
            });
        }catch (Exception e){
            LogUtils.e("移除event异常2："+e.getMessage());
        }
    }


    public synchronized void post(Object tag, @NonNull Object o) {
        if (EVENT.containsKey(tag)) {
            List<EventListener> list = EVENT.get(tag);
            if (list != null && !list.isEmpty()) {
                for (EventListener listener : list) {
                    ThreadToolUtils.getInstance().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            if (listener != null) {
                                listener.onMessage(o);
                            }
                        }
                    });
                }
            }
        }
        //所有主题的Listener通知
        if (ALL_TOPICS_EVENT != null && !ALL_TOPICS_EVENT.isEmpty()) {
            for (EventListener listener : ALL_TOPICS_EVENT) {
                ThreadToolUtils.getInstance().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        if (listener != null) {
                            listener.onMessage(o);
                        }
                    }
                });
            }
        }
    }

    /**
     * 注册所有主题消息的监听
     * @param listener
     */
    public synchronized void registerAllTopicsListener(EventListener listener) {
        if (ALL_TOPICS_EVENT != null && !ALL_TOPICS_EVENT.contains(listener)) {
            ALL_TOPICS_EVENT.add(listener);
        }
        TYPE.put(listener, MAIN_TYPE);
    }

    /**
     * 取消所有主题消息的监听
     * @param listener
     */
    public synchronized void removeAllTopicsListener(EventListener listener) {
        try {
            ioThread.execute(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (ALL_TOPICS_EVENT != null && !ALL_TOPICS_EVENT.isEmpty()) {
                            TYPE.remove(listener);
                            ALL_TOPICS_EVENT.remove(listener);
                        }
                    } catch (Exception ignored) {
                        LogUtils.e("移除event异常1：" + ignored.getMessage());
                    }

                }
            });
        } catch (Exception e) {
            LogUtils.e("移除event异常2：" + e.getMessage());
        }
    }

    public synchronized void clear() {
        ALL_TOPICS_EVENT.clear();
        EVENT.clear();
        TYPE.clear();
    }

    public synchronized void release() {
        clear();
        ioThread.shutdownNow();
    }


}